Structural Fire Protection

Structural Fire Protection

Based on realistic fire scenarios, FSD can optimise the passive fire protection for separating and load bearing structures by thermal and mechanical analyses using the finite element application TC FIRE. For each specific design feature exposed to fire the load bearing capacity can be analysed.

Design Fire Models
Based on operation, design, ventilation and fire load of the premises, a design fire can be estimated.

The most common design fires are according to nominal, predefined standard fire curves. They include the standard fire for buildings according to ISO 834, the external fire and the hydrocarbon fire curves according to Eurocode 1 (EN 1991-1-2). For tunnels, dedicated nominal fire curves include RWS, RABT and HCM.

As an option to nominal fire curves, other design fires include natural fires, defined as parametric fire curves with a cooling phase according to EN 1991-1-2. In case flashover cannot be expected other options include localised fires using a flame model according to EN 1991-1-2.

Choosing the most optimal, relevant design fire approach for each situation can result in considerable savings while maintaining a consistent safety margin.

Computer Simulations of Fire Tests
FSD has an extensive experience in assessing the thermal response of insulation products subjected to fire exposure. The effective thermal properties of insulation products can be derived from furnace tests according to an applicable standard.

The derived effective thermal properties then can be used for computer simulations in different design situations

Manufacturer's Benefits
Traditionally, manufacturers have been obliged to resort solely to expensive full scale furnace testing, when demonstrating the insulating capability of their product. Services to manufacturers of Passive Fire Protection (PFP) products include assessment of thermal properties as base for development of design guides. This offers the possibility of combining furnace tests with computer simulations, thus allowing for improvements in terms of reduced testing costs and extended applicability.

Design Guides
The scope of Design Guides is determined in close collaboration with the client and varies from one single design table to a comprehensive book of guidelines, depending on the client’s needs. Several leading manufacturers of mineral wool, gypsum boards, epoxy-, water- and cement-based fire protection compounds, have benefited greatly from the use of FSD Design Guides.

Design Guides produce optimised insulation thickness for a variety of different applications, thus providing a commercial and competitive advantage for the manufacturer. Design Guides speed up the design process considerably by providing the relevant data at the fingertips of its user. Design Guides implemented in a user-friendly software can result in additional advantages in comprehensive projects. It keeps track of the total material volume and other statistical data, which is useful for the material procurement stage, and for cost estimations in projects.

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